61641642775000 has 96 divisors (see below), whose sum is σ = 150744370805280. Its totient is φ = 23584628320000.

The previous prime is 61641642774991. The next prime is 61641642775007. The reversal of 61641642775000 is 57724614616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61641642775007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53026429 + ... + 54176428.

It is an arithmetic number, because the mean of its divisors is an integer number (1570253862555).

Almost surely, 2^{61641642775000} is an apocalyptic number.

It is an amenable number.

61641642775000 is an abundant number, since it is smaller than the sum of its proper divisors (89102728030280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61641642775000 is a wasteful number, since it uses less digits than its factorization.

61641642775000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107202911 (or 107202887 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 61641642775000 in words is "sixty-one trillion, six hundred forty-one billion, six hundred forty-two million, seven hundred seventy-five thousand".